From 7b9e7406ad0ecd2a87b6b27f4a31e0d6e2f1a5b0 Mon Sep 17 00:00:00 2001
From: allegroai <>
Date: Mon, 27 Jan 2020 15:41:00 +0200
Subject: [PATCH] Fix mutually_exclusive() use of at_least_one()

---
 trains/backend_interface/util.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/trains/backend_interface/util.py b/trains/backend_interface/util.py
index 649f6b87..ce964e9e 100644
--- a/trains/backend_interface/util.py
+++ b/trains/backend_interface/util.py
@@ -89,7 +89,7 @@ def mutually_exclusive(_exception_cls=Exception, _require_at_least_one=True, _ch
     """ Helper for checking mutually exclusive options """
     actual = [k for k, v in kwargs.items() if (v is not None if _check_none else v)]
     if _require_at_least_one:
-        at_least_one(_exception_cls=_exception_cls, **kwargs)
+        at_least_one(_exception_cls=_exception_cls, _check_none=_check_none, **kwargs)
     if len(actual) > 1:
         raise _exception_cls('Only one of (%s) is allowed' % ', '.join(kwargs.keys()))